package com.webinsky.web.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileUtils {

    public static void copyDir(String sourcePath, String newPath) throws IOException {
        File file = new File(sourcePath);
        String[] filePath = file.list();

        if (!(new File(newPath)).exists()) {
            (new File(newPath)).mkdirs();
        }

        for (int i = 0; i < filePath.length; i++) {
            if ((new File(sourcePath + File.separator + filePath[i])).isDirectory()) {
                copyDir(sourcePath + File.separator + filePath[i], newPath + File.separator + filePath[i]);
            }

            if (new File(sourcePath + File.separator + filePath[i]).isFile()) {
                copyFile(sourcePath + File.separator + filePath[i], newPath + File.separator + filePath[i]);
            }

        }
    }

    public static void copyFile(String oldPath, String newPath) throws IOException {
        System.out.println("copy: " + oldPath + " > " + newPath);
        File oldFile = new File(oldPath);
        File file = new File(newPath);
        FileInputStream in = new FileInputStream(oldFile);
        FileOutputStream out = new FileOutputStream(file);

        byte[] buffer = new byte[2097152];
        int readByte = 0;
        while ((readByte = in.read(buffer)) != -1) {
            out.write(buffer, 0, readByte);
        }

        in.close();
        out.close();
    }

    // 删除文件夹
    // param folderPath 文件夹完整绝对路径

    public static void delFolder(String folderPath) {
        try {
            delAllFile(folderPath); //删除完里面所有内容
            String filePath = folderPath;
            filePath = filePath.toString();
            java.io.File myFilePath = new java.io.File(filePath);
            myFilePath.delete(); //删除空文件夹
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 删除指定文件夹下所有文件
    // param path 文件夹完整绝对路径
    public static boolean delAllFile(String path) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
            return flag;
        }
        if (!file.isDirectory()) {
            return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            } else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                temp.delete();
            }
            if (temp.isDirectory()) {
                delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件
                delFolder(path + "/" + tempList[i]);//再删除空文件夹
                flag = true;
            }
        }
        return flag;
    }

}
